Flat-bed rotary printing-press.



H. B. COOLEY.

FLAT BED ROTARY PRINTING PRESS.

APPLICATION FILED JAN.25,1910.

1,070; 17, Peitente d Aug'. 12, 1913.

8 SHEETS'SHEET 1.

H. B. GOO-LEY.

FLAT BED ROTARY PRINTING PRESS.

APPLICATION FILED JAN.25, 1910.

Patented Aug. 12, 1913.

6 SHEETS-SHEET 2.

H. B. OOOLEY.

FLAT BED ROTARY PRINTING PRESS.

APPLIGATION FILED JAN.25, 1910.

Patnted Aug. 12,1913.

6 SHEETS-SHEET 3.

H. B. COOLBY.

FLAT BED ROTARY PRINTING PRESS.

APPLICATION FILED JA,N.25,1910.

. Pat ented Aug..12, 1913 .6 SHEETS-SHEET 4.

m'inasaes H. B. GOOLBY. FLAT BED ROTARY PRINTING PRESS. APPLIOATIQNFILED IAN.2'5,1910.I

Patented Aug. 12, 1913.

6 S-HEETSSHEET 5.

. I k 5 I N H. COOLEY. FLAT BED ROTARY PRINTING PRESS.,

APPLICATION FILED JAN.25,1910.

1 Q70,1 1 7, Patented Aug. 12 1913.

6 SHEETSSHEET D.

per shaft and its actuating springfor clos ow I he HENRY E. COOLER, OFNEW BRITAIN, CQNNECTICUT, ASSIGNOR TO THE AMERICAN NEW JERSEY.

oren-ii.

Application filed January 25, 1910.

To (ZZZ whom it may concern be it known that l, Hex: B. (isomer, acitizen of the United S es, and residentoi New Britain, in the county ofHartford and State of Connecticut, have invented a new and usefulFlat-Bed Rotary l rinting-Press, of which the following is aspecification.

My invention relates to n fiat bed rotary printing press with the objectin View of providing n press of this character which ill pegt'orm. its worl; in a rapid and efiicient nninner.

A practical embodiment of my invention is represented in theaccompanying drewings in which,

Figure 1 is a view of the press in rear elevation; Fig. 2 is niview inend clovetion; rig. 3' is e veft cal central section from front to Fig.4 is i vertical section in the plane of the line AA, Fig. 1; Fig. 5 is adetail elevation partly in section, showing the mechanism for preventingthe impressioncylinder from engaging the type on. the form cylinder whenno paper is fed; Fig. 6 is a view in detsil showing the means forlocating the cam shaft in it-s timed position when the gear is changed;Fig. 7 is a view in detail showing the arrangement of the contact platesfor maintaining the electric circuit closed to prevent the impressioncylinder from. smntting' when it is not carrying paper to be printed.Fig. Sis an enlarged top plan View of the impression cylinder and itsaccessories. Fig.

9 is a view of the some in. end elevetion' Fig. 10 is e transversesection of the some in the'plane iii the line B-B ct Fig. 8. Fig.

11 is a siinilgir section taken in the plane of the line C-C of Fig. 8.Fig. 12 is J partial longitudinal central, section through the saline.Fig. 13 is a view in detail showing the crank arm on the gripper shaftend its engagement with the stetienery cam for posi tively opening thegrippers, lgig. is is a viewin detail showing the arm onthegrip ing thegrippers,- and Fig.1?) View in detailshowing the vibrating arse. whichsupportsj'the electromegnet for controlling the position 0f theimpression cylinder with re lotion to the form cylinder and the camitoroperating the arm. i

My invention contemplates continuously Specificetionoi Letters Eatent.

rLn-rsnnnorenr PEINTII-IG-PBESS- ES AVAILAELE Patented 1%, leftis SerialNo. 539,942.

rotating form and impression cylii'iders, the form cylinder beingprovided with one or more fiat beds, in the present instance, two, forreceiving the type chases and the inipression cylinder being providedwith curved paper receiving laces arranged to coect with the type on thetint beds of the foini cylinder, the speed oi rotation being soregulated that there will be :i ret-zirded movement of the form andimpression cylinders during the actual contact of the paper to beprinted with the type and an accelerated movement of the cylindersinterinediete oi two consecutive printing opera- UOIIS.

My invention further contemplates one or ii plurality of printingoperations during each revolution of the impression cylinder and theautomatic shifting of the impres sion cylinder bodily away from the formcylinder whenever e' paper carrying face on the impression cylinderfails to receive paper to be printed.

My invention further contemplates mean. for adjusting the paper c rryingfaces 0 the impression cylinder both radially and rot-atively andvarious other features of construction and combinations of parts willlee hereinafter particularly described.

The frame of the machine is denoted by 1. it is made snl -icientlystrong and heavy end of such form as to' conveniently support-theseveral parts in such a manner as to prevent undue vibration. The driveshaft, denoted byiQ, is provided with feet and loose pulleys 8 and i'which receive power from a suitable source, not shown. The drive shaft 2also carries a balance wheel 5.

The-shaft on-Wliich the form cylinder is carried is denoted by It,issuitably monnted in the frame 1 and receivesa rogte-ry movementdirectly from the drive shaft 2,- through thepinion 7 on driveslisftendthelsnu? wheel 8 on the form cylinder o: The form (cylinder isprovided-with two oppositely disposed fiat faces 9 and re for receivingthe type chases 11 and 12, end with two oppositely dis posed curvedfeces 1-3 and 14. At oncrend the" shaft 6 carries two mutilated gearwheels or disks arranged -side by side operating; as complements ofeachother. One

oftiie se gears-is on a circular disk 153ml intermediate of theseportions.

the other on a disk 16 having two flat sides and two rounded sidescorresponding to a cross section oi the form cylinder nere1n- -abovedescribed. The disk 15 is provided with spur teeth along those portionsof its periphery which correspond to the curved "laces oi the dislr 16and is left smooth riimncd intermediate of these portions and the disk16 is provided with spur teeth along its flat sides and left smoothrimmed These mutilated spur gears drive the impression cylinder as willlater appear.

The impression cylinder consists of two semi-cylindrical segmentsdenoted by 17,18, each mounted in rotative and radial adjustinent andcarried bodily by end frames 19 fixed to'rotate with a shaft 20, thelatter mounted in eccentric hearings in the frame 1 for purposes whichWill hereinafter more particularly appear. The segments 17, 18, are hereshown arranged diametrically opposite each other with respect to theshaft- QO, and their relation to the form cylinder is such that theywill normally travel along the flat beds of the form cylinder With theircurved surfaces suiiiciently close to the said flat beds to press thepaper carried by them into printing contact with the type held on saidflat beds. is the two printing segments of the impression cylinder arealike in their structure and operation, a description of one willsutiice for both. Referring to the segment 18, Figs. 10, 11 and 14, ablanket 21, in the present instance a paper blanket, leads fromretaining rolls at one edge of the segment over the face of the segmentto a rocking clamp at the op-- posits edge, the clamp being adjusted bya screw 24%- engagcd with the tail of the clamp and pressing against theaxle 25 oi the segment. Grippers, like the gripper 26, are fixed on arock shaft 27 carried by the seg ment and are operated at the properinterrals to grip'the edge of the paper, fed onto the segment, by aspring 28 attached to an arm 29 on the shaft 27 and to a pin 30 on thehub of the end frame of the impression cylinder. An abutment 31, one foreach gripper, for engaging the advance edge of the paper and squaring iton the printing segment, is loosely mounted on the shaft 27 with a pin31* extending laterally through an elongated slot 32 in the gripper 26,the tail of the stop being acted on by a spring tendingto force theoperating end of the abutment toward the face of the segment when therocking movement of the gripper will permit it to do so. A fixed cam 33engages an arm 33 on the rock shaft 27 to open the gripper and with itthe abutment, the said cam being provided with an intermediate ledge 34to permit the partial rotation of the shaft 2'3, sufiicientto; allow theabutment to fall under the in tluencc of its actuating spring intooperativc position on the segment in advance of the complete movement ofthe gripper into its operative position.

In pactice, When a sheet is about to be fed onto the segment, thegripper will be rocked suliiciently to allow the abutment to take itsposition to arrest the sheet and the gripper Will then after the sheethas reached its position close down onto it and hold it during theprinting operation. The slot 32 permits this motion of the gripperindepondcntly of the movement of the abutment. The segment 18 isprovided with a. hub at each of its ends and these hubs are received inrecesses in sliding bearings 37 in the frames 19, which bearings alsoreceive the axle 25. Set screws 38 extending; through elongated slots38* in the upper portion of the said sliding bearings and into thesegment, serve to hold the segment in the desired rotary adjustmentabout the axis of the axle 25, While screws tapped into the hubs of theframes 19 and provided with lock nuts 40, serve to hold the saidsegments in the desired radial adjustment.

The radially adjustable bearings 37 for the impression segments haverims 37* which are just blanket high and which bear on shoes 11" on theform cylinder, the latter just type high. The rims contact with theshoes just prior to the engagement o E the type with the sheet andcontinue to hear until the type leave the sheet, thereby pike veninslurring of the imprint.

'ine ii'n ression cylinder shaft 20 carries on one end inutilatec',gearing consist in o; oi a wheel il provided on its periphery with. spurteeth sections 49, e3, arranged diametrically opposite each other, thespaces intermediate oi the adjacent ends of said.

spur toothed sections being bridged by semicircular sections of spurteeth l and on.

arcs of lesser ra dius than the radius of the arcs of the sections 42,4:3, and located latorally out of the plane of the sections 4-9. 43. Theradius of the toothed sections to, 48, less than the radius of the toothsections of the disk I5 hereinbefore described, While the number ofteeth on each of the sections and 4'3 corresponds to the number 0t teethon each of the toothed sections of the disk 15. of teeth. on each of thetoothed sections 445,

45, correspond to the number of teeth on each of the flat sides of thedisk 16. The disk 15 andwheel 41 are in the same plane and. so arrangedthat the teeth on disk 15 Will engage the teeth on the wheel 41 and thedisk 16 and toothed sections e4, 45 are in the same plane and soarranged that the teeth on the flat sides of the disk 16 will engage theteeth on the sections 44:, 45. The

struhture and. arrangement or" the inter-operating gear sections issuch, moreover, that In like manner the number a tooth on the Hatsection of thedisk 16 will engage atooth on the section so or 45 beforethe teeth of the curved toothed section on the disk 1-5 leave the teethon the section 42 or 43. The smooth rim portions of the inter-engaginggear on the disks 15, 16, and wheel 41 are located in the pitch lines ofthe gear sections laterally adjacent thereto and inter-engage to formbearers for the form and impression cylinders to direct the tc .i of theengaging gears into engagement without any cramping or grinding.

The toothed sections 44 d5, correspond to the positions of the printingsegments of the impression cylinder and the sections 42, 413, to theintervals between the printing segments and because the teeth on atoothed section of the wheel 41 extend along a greater proportion of theperiphery of the wheel than the curved toothed section on the disk 15extends, due to the number of teeth on the said sections being the sameand the radius of the section 42 or 43 less than the radius of thesection on the disk 15, the wheel l1 and hence the impression cylinderwill rotate faster ,than the disk 15 and hence faster than the formcylinder, during the interval between two printing operations, Again,because the teeth on the that side of the disk 16 correspond in numherto the teeth on the sections 4st or so and occupy a chord of an are onthe disk 16 greater than the arc bridged by the section 44 or 45 on thewheel 41, the wheel 41 and "hence the impression cylinder will rotateslower than the disk 16 and hence slower than the form cylinder duringthe printing operation. I k a t is to be notedthat Where a plurality ofimpression segments are provided as above described, the paper may befed onto one impression segment while another is printing and hencewhile the impression cylinder is moving at a reduced speed; and as thespeed of the feed rollers, hereinafter referred to, is uniform, there isa reduction of speed of the impression cylinder relative to the feed atthe timethe sheet is being fed onto the so abutments 31.

impressionsegment and hence thesheet fed .is' caused to positivelyregister against the This variation in the rela' tive speeds of the feedrollers and impression cylinder is accentuated so far as it affects theregistering of the sheet by the fact that the abutments 31 are locatednearer the axis of the impression cylinder than the curved surfaces ofthe impression segments andv hence travel slower than said surfaces asthe impression cylinder rotates.

Anti-matting mechanism-To prevent the face of an impression segment ofthe impression cylinder from engaging the face on the type 9nthe formcylinder when, either from intention any impression segment is notprovided with asheet to be printed, or,-

unintentionally a sheet fails to be fed in po 'sition, the shaft of theimpression cylinder and hence the impression cylinder itself isautomatically moved bodily away from the face of the type and held awayduring the time the face of the impression segment is traveling over theface of the type. This is accomplished as follows. The impressioncylinder shaft 20 is mounted eccentrically in bearings one of which isshown at 46, (Fig. 5}, it being understood that a similar bearing isprovided for the shaft 20 at the opposite side of the frame. T hebearing 46 and its companion are in turn rotatably mounted in suitablehearings in the supporting frame. Pitmen 4:7 and 48 are jointedrespectively to split collars l9 clamped on the bearing 46 and itscompanion, the said pitmen being engaged at their opposite ends by cams51-, 52, on the cam shaft 53, the latter being driven from the-driveshaft 2 through the gears 151, 152 on the "drive shaft and gears 14.9,150 on the cam shaft, (see Fig- (3). A. spring 56 tends to draw therollers 57, 58, on the pitmeninto engagement with the cams 51, 52,.lowering the pitmenand hence rocking the bearing 46 and its cornpanionand thereby movin the shaf 20 sn'lficiently to prevent the race of animpression segment from touching the face of the type. The pitmen 4:7,-18, are held from unintentional dropping by stop blocks 52, ad]ustablyattached to the pitmen by means. for example, of an elongated slot andset screw I31, 62, which stop blocks rest on a shoulder 63 on a slide 6supported in a way 65 secured to the frame, the slide being providedwith apin Gdagainst which the end of a slide operating arm 68 bears. It

is tobe understood that there. aretwo slides.

similarly constructed and arranged, one for each stop block, and thatthere are two slide operating arms connected by a bottom element 69,forming a general U-shaped structure pivotally secured to the outersides of the frame 1, one of the pivots being shown at70. The element 69is provided with an armature 71 which co'tiperateswith anelectromagnet 72 carried by the lower end of a vibrating arm 7 3 pivoted to the frameat 74 and connected by a pitman 75 with the shaft on which the forkedend of the pitman rides. The pitman 75 is provided with a roller 7 6 inposition to gngage a cam 7 7 similar to the cam 51, to neck the arm 73against the tension of its retracting spring 78. The slides are moved'bysprings, one; 5 1 being shown in Fig. -5, into position to arrest thestop block 59 and its companion, thereby holding the. pitmen 4 7, 48,suspended l and the impression cylinder in printing position. The partswill remain in this position so long as the electromagnetTZ remains den:

ergi-z'ed', the latter swinging back and forth asthe arm 73 is swungduring the revolufthereby throw the impression cylinder out of touchwith the type. The energizing: and

dccnere'izing of the electromugnct. T2 is ac complishcd as follows: Binelectric circuit is formed by wires 79, 80. leading; from. the oppositepoles of a battery 81 to binding posts 82, 83, on a projection of theframe 1. Curved contact. strips 81, 85, are carried by an end frame ofthe impression cylinder, a pair of these strips for each impression section of the cvllndcr, in position to contact respectively with thebinding posts 89., 83, during; the time the face of the impressionsection is passing; along over the type. These contact. strips or platesare connectct with contact terminals 86, ST, expo-sod. on the face ofthe impression section and at all other points suitable insulated fromthe cylinder. The construction here shown is insulated Wires 88, 89,leading from the strips 81, 85, through rubber plugs 90, 91, set in thecylinder. A bridge piece 92 of suitable conducting material, as, forexample, brass, is pivoted to a bracket 93 secured to and insulated fromthe advance edge. of the i1n-' pression section in position for thebranches of its forked end to swing into and out of contact with theterminals c6, 87, at the face of the impression section. A. spring 94tends to hold the bridge piece out. of contact with the tern'iinnls.

The bridge piece is forced into contact with the terminals to completethe electric circuitthrough the strips 8%, S5, and binding; posts 82,83, by a dog consisting in the present instance of a flat piece of steelhaving its end split to form branches 96, 97, and secured to an arm 98attached to an insulating block 99, fixed on a rock shaft 100 mounted inthe end frames of the cylinder and provided at one end with a crank 101,the pin on which is provided with a. roller in position to engage a can]102 fixed to the. frame 1 and so shaped as to rock the dog 95 and holdit. out of position to press the bridge piece 92 into contact with thetar-- iuinals 86, 87, during the. interval when the impression segmentis traveling intermediate of successive forms of type on the formcylinder, but permitting the dog 95 to be rocked by its actuating spring103 attached to an arm 10% on its shaft, during the period when theimpression segment is moving over the type on theform cylinder,' in adirection to press the branches of the bridge piece into contact withthe terminals 86, 87, there ,sion cylinder to be moved during; suchperiod.

away from the face of the type. The split end of the dog 95 insures thepressure of the branches of the bridge piece into close contact; withtheir respective teru'iinuls.

The location of the terminals and the bridge piece is such that when asheet of paper is fed into position on an imp ession segment, it. willcover the terminal; before the bridge piece is pressed down toward themand hence will insulate them from the brir g'e piece so that. theelectromagnet. 72 Will notbe energized excepting when no sheet. issupplied to the impression section. Hence, so long as the sheets are fedproperly to the impression sections, the im. prcssion cylinder Will.remain in position to engage the type but whenever an impressioncylinder fails to receive u sheet that impression section will notengage the type. and hence ,its blanket will not become d a uhcd orsmutted. I

The relation of the driving and driven gear is such that the rocking ofthe bearings carrying the impression cylinder shaft may take place, ifpermitted torock, just before an impression section begins its travelover a type form and the cams 51 and. T? on the cum shaft. serve tooperate the respective. pitmen 4:7 and '75 into p-ssiti'tfiifthc one toreceive thc stop blocks on the. slides and the other to move the slidesunder the stop blocks.

Fcccl mac/lmu'sm-. 'lhe feed mechanism which 1 prefer to employ is ofthe type shown, described 'and claimed in my Patent. No. 874%3 grantedDecember 31st, 1907. and my pending applicatirms Serial No. 4595249,feedingdevice, filed December 26, 1908, and Serial No, 469274, pneumaticpump, filed December 26, 1908, in which. the sheets or articles to beprinted arc arranged in a pile 105 on a slanting table 106 and are drawnonto a feed roller 10? by suction and thence advanced by feed rollers tothe impresssion vliuder. As in the putcnt referred to, the feedmechanism is opox atcd by the cum shaft through jointednrms connectedwith aslide and the. exhaust pump 1.08 is also operated from the camshaft, the exhaust being communicated to the vlindcr 107through the tube109. My present invention, however, provides for interrupting thesuction and hence the feed when it. is desired to use for the. timebeing less than the wholenumber of impression segments. in the prcscniinstance, one instead of two such segments. To accomplish this. a rock110 is inserted in the tube. 109 and provided with an arm or crank 111.for opcnin gnnd closing it. The crank 111 connected by a link withu'vibrating arm 113 piroicd to the frame at114 and adapted to beoperated by a pin 115 carried by a disk on the impression cylinder shaft"in such position that it will engageand rock and therebyclose the cock110 and preventsuction just as one segment of the feed cylinder 107approaches the position to draw a sheet onto it, thereby omitting thefeed of a sheet. The link 112 is made readily removable so that wheneveritis. desired to feed a sheet to each impression section, the cock 110may be disconnected from the'arm' 113 and the suction made therebycontinuous.

Itwill be observed that there is an intimate co-active relationbetweenthe means for interrupt-ingthe suction and means for moving theimpression cylinder away'from the type form, since the latter movementtakes places when no sheetis fed and no sheet is fed when the suction isinterrupted. The sheet received on the face of an impression segment isheld smoothly thereon as' the impression segment moves toward the thetapes are rate application typeform, by curved spring arms 11G suspendedby a rod 117 in thepath ofthe impression section.

DeZie'c-ry mecham's 2;2,.The' particular structure and operation of thedelivery mechanism forms the subject-matter of a separate application,Serial No. 539941 tiled of even date herewith. stated, of two endlesscarriers composed .of tapes 11S and 119, the former passing around guiderollers 120 and121 and in engagement w'th pulleys 122 on the cam shaft,by which driven, and the latter passing around a roller123 mountedinbrackets on the frame and around a floating roller 124. Tl1erolle1-"123 is driven by a band from a pulley on the camshaft .and thefloating roller 124 is rocked by cranks 125 on the shaft of the roller123, the said cranks being operated by pitmen 126, 127, connecting thecranks with cams on the impression cylinder shaft. The floating roller124 is lifted and lowered at such intervals as to direct the printedsheets alternately into the receivers 128 and 129. p I

Ink distributing mechanism.The ink distributingmechanism which I preferto employ forms the subject-matter of a sepaeven date herewith and isconstructedto thoroughly grind, spread and evenlyv apply the ink to'the. face of the type. The ink fountain is denoted by 130, the inkroller by 131, the doctor by 132, the rotary and longi- 137, the twolatter rollers being arranged to I tudinallyf reciprocating in-kdistributing drum by 133 and the rollers for transferring and applyingthe ink by 134, 135,136 and cooperate with a second ink distributing andsmoothing drum 138. I p

in order that the cam shaft may be kept the arm 113..

It consists briefly vide for printing with both the impression SerialNo. 539943 filed of.

sorted to in the form and the parts without departing from the spirit 13in time during the shifting of gear to reduce or increase the speedofthev cam shaft relatively to the speed of the drive shaft, as, forexample, when it is desired to'shift from printing with two impression.segments to printing with one impression segment or vice versa. a disk139 is fixed on the cam, shaft and provided with a recess 1-10 extendingradially inward from its periphery. A longitudinally sliding bar 141 ismounted in the frame andprovided with a pin 142 of such size that itwill pass through the recess 140 with an easy sliding fit when the bar141 is advanced or returned.v Thebar14l is also provided with a rack 143engaged by a toothed sector 144, the latter pivoted to the .frame 1 andprovided with an operating handle 145. The said bar 141 is furtherprovided with a shifting arm 146 fixed thereon,'-its upper endbeingconstructed to enterafgroove 14"- on a sleeve 14S splined on the camshaft and provided with gear wheels 149, 150, of difierent sizes and,for' convenience, locatedon opposite sides of the groove 147. The gearWheels 149 and 159 are constructed to intermesh respectively P with gearwheels 151 and 152 fixed on the drive shaft 2. hen the gear 149 oflesser diameter and having a lesser number of teeth than the gear 150,isin mesh with the gear 151 of greater diameter and having-a greaternumber of teeth than the gear 152, the cam shaft will be driven at anincreased rate of speed, to wit: a speed which will prosegments, andwhen the gear 150 is in mesh with the gear 152, the'cam shaft will bedriven at a rate suitable for printing with one impression segment. Thethrow of the bar 141 to slide'the gears 149 and 150 along the cam shaftto bring either of the above in- I termeshing sets of gears into meshwith each otl er is-,-.suflicient to cause the pin 142 on the bar 141 topass through the recess 140 in the disk 139 from one side of the disk tothe opposite side and hence the shifting of the gears can only takeplace when the recess 140 is in alinement with the pin 142, that is,when the cam shaft is in its properly timed relation to" the parts whichco-act therewith. 1 5

The operation of. the several parts of the machine have been so fullyset forth-with respect to the parts which co-act therewith that adetailed description of the operation as a whole is omitted as uncalledfor. r

In general it may be stated that the machine provides for expeditiousand accurate work when the plurality of impression segmen'ts are in useand at the same time provides for the use of but one of the impression12,5

segments without harm to an impression segment not in use.

It is evident that chan es. might be rearrangement of pressioncylinders, said gears including a straight line gear corresponding tothe flat bed on the form cylinder, a curved gear corresponding to theimpression segment on the impression cylinder and adapted to engage thestraight line gear during the printing operation and gears carriedrespectively by the form cylinder shaft and impression cylinder shaftand located out of the plane of the aforesaid gears and arranged tointermesh intermediate of successive printing operations.

In a printing press. a form cylinder provided with a fiat bed forreceiving the type chase, means for continuously rotating it. animpression cylinder provided with a curved impression segment forreceiving the sheet to be printed, and intercoacting gears carried bythe shafts of the form and impression cylinders, said gears including astraight line or rack gear corresponding to the flat bed on the formcylinder, a curved gear corresponding to the impression segment on theimpression cylinder and adapted to engage the straight line or rack gearduring'the printing operation, and intermeshing mutilated circular gearslocated. at the side of and out of the planeiof the aforesaid rack andcurved gears, the said rack gear occupying a position corresponding tothe chord of an are on the mutilated circular gear greater than thechord of the are occupied by the curved gear adjacent to the othermutilated circular-gear, the said mutilated circular gear being arrangedto 'intermesh alternately with the mesh of the rack and curved gears.

3. In a printing press, a form cylinder, an impression cylinder providedwith a sheet registering abutment located nearer the axis 7 of theimpression cylinder than the impres sion surface of the cylinder, apaper feeding mechanism and means for reducing the speed of theimpression cylinder relatively to the speed of the paper feedingmechanism at the time the paper is fed to the impression cylinder.

4. In a printing press, a form cylinder for receiving the type, animpression cylin-' der provided with an impression segment rotatablyadjustable about an axis independent of the impression cylinder axis forcarrying a sheet to be printed into engagement with the type and meansfor adjusting the impression segment radially toward and away from theaxis of the impression cylinder.

5. In a printing press, a form cylinder provided with a plurality oftype receiving portions, an impression cylinder provided with aplurality of impression segn'ionts, and means for adjusting theimpression seg ments independently of one another radially with respectto the axis of the impression cylinder and rotativcly with respect tothe axes of the impression segments.

6. In a printing press, the form cylinder provided with a plurality oftype receiving beds, an impression cylinder provided with a plurality ofimpression segments, means for moving the impression cylinder bodilytoward and away from the type receiving beds on the form cylinder, anair suction feed for feeding the sheets to the impression segments andmeans for interrupting the suction at predetermined. intervalssimultaneously with the bodily movement of the impression cylinder awayfrom a type receiving bed on the form cylinder.

ferent sets of intermcshing gears carried by the two shafts, a diskfixed on the cam shaft and provided with a recess extending inwardlyfrom its periphery and a sliding-bar connected with the gears on the camshaft for shifting them and provided with a pin arranged to pass throughthe recess in the said disk, the arrangement of parts'being such thatthe gear can be shifted only when the pin is in alinement with the saidrecess.

9. In a printing press, the combination With the drive and cam shaftsand different sets of gears carried thereby in position to intermesh,the gears on the cam shaft being arranged to slide thereon, of alongitudinally sliding bar provided with a rack and carrying a pin andan arm for sliding the gears, a toothed segment provided with a handlefor operating the bar and a disk fixed to the cam shaft and providedwith a recess extending inwardly from its periphery through which thesaid pin on the bar may pass when the pin and recess are in alinementthe said disk forming an obstruction to the movement of the bar when thesaid recess and pin are not in alinement.

10. In a printing press, the combination with the impression cylinderprovided with radially adjustable impression segments having bearing riends of the impression segments, of a form cylinder provided engage thebearing rims on the impression the arm segments,

that the ing such shoes just before In testlmony, that Eepiee of thispatent Ins blanket high on the asm y invention,

with shoes in position to January 1910.

ngement of the parts bebearing rims engage the he type engage the sheet.

I claim the foregoing Witnesses;

I m may be obtained for fiveoents each. by addressing the Washington, D.C.

I have signed presence of. two wltnesses,

my name in thls HENRY :e. GOOLEY.

HENRY C. THIEME, C. L. LUNDGREN.

Commissioner of Patents,

21st day of 10-.

